Knotter.



B. E. BYRD. KNOTTER'. APPLIOATION FILED MAR. 25. 1910.

, 1,002,495,- Patented Sept. 5,1911.

UNITED STATES PATENT OFFICE.

IB BIT'ION E. BYRD, F DURHAM, NORTH CAROLINA, ASSIGNOR T0 BYRD MANUFAC- TUBING 00.", 0F DURHAM, NORTH CAROLINA.

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Specification of Letters Patent. Patented Sept, 5, 1911,

Application filed starch 25, 1910. Serial no. 551,487.

'To all whom it may concern:

Be it known that I, BRITTON E. BYRD, a citizen of the United-States, residing at Durham, in the county of Durham and State of North Carolina, have invented a new and useful Knotter, of which the following is aspecification. v

This invention has reference to improvements in knotters, and more particularly in knotters designed to be used by hand for securing together the ends of threads, the eing usually carried by the left hand of the operator and actuated by the thumb.

It is the object of the present invention to provide animproved construction wherein these parts may be readily stamped fromv sheet metal into the desired shape and readily and cheaply asembled.

The present invention is'an improvement on the knotter shown and described in Letters Patent #934,389 granted to me on Sept.- 14, 1909, and is directed more particularly to the clamping mechanism for the threads,

the knotter of the present invention beingalso modified in some respects over the knotter shown in the said Letters Patent in other particulars than in the clamping mechanism.

The invention will be best understood from a consideration of .the following detail description taken in connection with the aecompanying drawings forming a part of this specification, in which drawings,-

Figure 1 is a view, with parts broken away, and on a somewhat enlarged scale, of ahand knotter embodying the present invention, the parts being shown in normal position.

" Fig. 2 is a view similar to the showing of v Fig. 1 but with the parts in operative position. Fig. 3 is a perspective view with parts in section of the clamp mechanism. Fig. 4 is a perspective view of a bracket co-acting with the 'clamp mechanism. Fig. 5 is a fragmentary detail view, showing, the tyingbill shaft.

Referring to the drawings there is shown a casing or body portion 1 housing a portion of the actuating mechanism for a tying bill 2, but as these parts..form no necessary part of the present invention it'is deemed unessential to describe them in detail. At one end of the casin 1, that is the end rexhote from the tyingill 2there is a in or arbor 3 carrying the angle end of a s stantially triangular frame made up of. a base member 4, an arm 5 and a connecting part 6 which latter is preferably curved'concen-'- trio with the arbor-'3 and. carries a suitable rack 7, or other driv' means for the shaft 2 of the tying hill 2 so that-w'hen'the frame is moved about'the arbor '3 as a pivot the tying bill willbe rotated in-the usual man- 8 surrounding the arbor 3,

nor. A spring1 and at one en engaging the arm 5 and at the other end engaging the casing 1, serves to maintain-the trangular frame in the inoperative position illustrated in '1. A thumb-piece 9 projects at the junction point of the members4 and 6 of the frame so that by the applicationof a suitableforce on'said handle member, usually by thethumb-of the left hand of the operaton-the frame may. be-

ent. The bracket 9 is connected to the casing 1- preferably at the axis of the arbor 3, by a brace 12 having the end adjacent to the casing 1 slotted, as shown at 13 so that the relation of the hand hold to the casing 1 may be adjusted within limits; I The end. of the bracket 9' where connected to the casing 1 is so connected bya screw 14, being sur-.

rounded between the bracket 9 and the corresponding face of the casing 1 with a sleeve 15 which operates both as a spacin sleeve and as an antifriction roller as wil presentl appear.

and 17, each comprising a central longitudi nal member 18-formed on one side near one end with an offset 19 through which there is formed'an elongated slot 20 of suehwidth as to receive the .roller.1'5 without binding, the screw 14 also extending through the slot 20 of the two matching members 16 andl/I of the clamp. Each member 181s joined at T e clamp member of the knotter comprises a frame made up of two like parts '16- the ends to a strengthening piece 21 arching from one end to near the ,other of the'central member 18. The two members 16 and 17 mei-nbers '18, of the two clamp members ,-.l617f-s'ecur1ng' these members together in -"'suttic-i'ently separated toreceive the slide'22 5 while quite closely embracing the same; At

spaced relation "so that these members 'are theother end of the clamp remote from the end where is located thehook 23 the two :nembers 16 and l'r'are joined by a pin or rivet 27 which in turn secures the clamp member pivotally to a bracket 28', the other end'of 'which is,bent to embrace and be secured fast to the arm 5, in any appropriate manner. Since the screw .14 traverses the eye2=1 of the slide 22, the latter remains in fixed relation to the bracket 9*fso far as any longitudinal movement is concerned but is free to turn about the longitudinal axis'of the-screw 14 with relation to said bracket.

lVhenthe frame made up of the members 4., 5 and 6 istur'ned about its pivot3' b force applied to the thumb-hold 9, the bracket 28 participates in this movement a'nd'itsfreeend moves'through an are concentric with the axis of the'pin'or arbor 3. The length of the bracket 28 and its relation to*thearm 5' is"such thatits free'end will ,move in air-arc toward the screw 11 and then pass the same for a distance, leading between said screw and; the pinor arbor 3. Since the free end oftliebracket 28 is pivoted to thecorresponding' end of the path the clamp structure, made up ofthe frames,

16 and 17, the corresponding ends of this clamp structure will be carried through'a 4 like path, approaching and then passing the screw 14; The result of this is" that the frames 16 and 17 are given both arotative movement about the axis of the screw 1 1 and a longitudinal movement with relation thereto, which movement is permitted by the slots 20. The other end of the clamping members 16 and'17 therefore rise through a path: determinedby'the movement of the first named end of the clamping members with relation tothe screw 14. ning of the movement of the frames 16 17 is in a line nearly coincident with the length of the members 18 of the'clamp frames andthis movement continues until these frames have approache'd' -the hook 23 and finally moved on each's'ide'of and in embracing relation' thereto, this movement being permitted'bytheslot QStIaWISBdby the pin 26 and continues so long as the freefendiof' the bracket 28 is moving'in a nearly'di'rect line At an intermediate,

' The begin .s 1 1 f toward the pin 14. As soon however as the free end the bracket 28 annlrthegcoricsponding.ends-ofthe clamp frames cease to move in a nearly direct line toward the cscrew 14 but begin to move past the same then the other end of the clamp frame rises rapidly in a curved path nearly-concentric with the axis of the screw let.

The frame 1"011 the side of the tying bill remote from that occupiedv by thercla-nip fralne carries athread supporting hook 29. Thethread to be tied is laid into "the hook 29 and then across; the tying bill 2 aiid through the hdok 23" betwee11, the same and the archm ember s 21 of the frames 16 and 17whe're' they join the longitudinal members 18 adjacent to the hook 23. On. now manipulating the actuating frame made up of-the members 4, 5 and G by a force applied to the thumb-hold 9, the tying hill 2 is given a rotative movement and at the same time the frames 16 and 17 are moved along the slide 22 until the hook 23 has gripped the thread against the adjacent edges of the' draw it on the tying bill which,' in the meantime, has tieda knot in the two strands to be united.

lVl'iil'e'the member 22 has been termed a slide, the sliding movement is only relative since it only has a pivotal movement about the screw 1 1, while the other member of the clamp structure slides with relation to the 'screw'14 andwith relation. to, the member 22. e

What is claimed is:- 1. The con'ibination with a tying bill and means for operating the same, of a two-part thread-clamp having its members mounted upon a common pivot and arranged for right-line reciproca-tory movement in opposite directions, and a connection between one of'the clamp members and the tying bill operating means, whereby arcuate movement "of the latter in one direction will impart like movement in the other direction to the clamp-thread member with which it is connected and simultaneous right-line reciprocatory movement to the two clamp members throughout the arc. traversed.

r 21 Thecombination-with a tying bill and means for operating the same, of a two-part thread-clamp pivotally supported adjacent to the tying bill, and. means actuated from the tying bill operating means for imparting arcuate and right-line reciprocatory movements to both of the members of the thread-clamp in an opposite direction to the movement of the operating means.

3. A hand carried and manipulated knotter, having a support, a shaft rotatably mounted therein, a spring returned segment pivoted to one end of the support, coacting means carried by the segment and shaft to rotate the shaft, a finger-engaging arm to operate the segment,a tying bill arrangedwhereby the segment may be operated in one direction, a spring for returning the-segment in the opposite direction, a tying bill mounted at the outer end 'of said shaft, a clamping member" formed of two self contained members, one of which is piv oted to the frame while the other is pit;-

otally and slid'ingly mounted with relation to the other member, and means for'operably connecting said sliding member-to'the segment, whereby as the sliding member is lifted the pivoted member is lifted and the sliding member is moved outwardly to throw-off position.

5. A hand carried and manipulatedknotter, having a support, a shaft mounted for rotation in the support, atying bill carried by the outer end of the shaft, a gear formed on the shaft with-in'the frame, a segment pivoted within the-frame and provided with a rack surface for engaging the gear to 1'0- late the shaft when the segment moved,

a finger-engaging arm for operating these-gment in one direction, a spring for returning the segment in the opposite direction, a clamping member formed in two parts, one of which constitutes a hook with a fixed pivotal point. to the frame, and the other having a sliding movement aroundt'he pivot to coact with the hook, and means for con-. necting the sliding member to the segment,- .whereby as the segment is moved downwardly the sliding member has its outer end moved upwardly and outwardly and the outer end of the hook is raised. 6. The herein described knotter comprising a support, a shaft rotatably mounted therein, a tying bill at one end of the shaft, two arms disposed at ri ht angles to each other and, having their angles pivoted to the support at the rear of the shaft, a spring for normally holding one arm against the under side of the support, a finger arm carr'ied bythe support engaging arm, coacting means carried by the extreme cnds'of the arms and shaft to rotate the latter, a hookpivoted to oneside of the support, two open frames, one upon each side of the hook'hav- 'ing a slotted connection to the pivot securing the hook, the hook and two frames formlng a thread guide, clamp and throw-off device, means for causing the hook to be raised .with the two frames, and a bracket connecting the slotted frames to the upright arms,-whereby as the shaft is rotated against th spring tension, the slotted frame lifts the ho'ok and is itself raised and moved outwardly.

In testimony that I claim the foregoing as my own .1 ,have hereto affixed my signature in th'e'presence of two witnesses.

BRITTON E. BYRD.

Witnesses i S. E. LINDSEY, W. G. VVEGENER,

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, 1). c. y 

